<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
		
	<body>
		<img />
		<div id="target">1</div>
		 <button id="but1">递增</button>
		 <button id="but2">递减</button>
		
		<script type="text/javascript" src="JsDOM.js"></script>
		<script>
		
		</script>
	</body>
</html>